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Proceedings Paper

Noise-free readout in holographic storage by concave mirror
Author(s): Wenqiang Lu; Yudong Li; Jingjun Xu; Qian Sun
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Paper Abstract

In photorefractive holographic storages, the superimposed holograms make the refractive index of the media irregular. The readout beam is scattered by the media and the noise is added onto the reproduced messages. In this paper, we introduced a simple way to suppress the noise caused by the superimposition. In our method, holograms were recorded by convergent reference beam. We made the convergent point of the beam overlap the curvature center of a concave mirror. The reflected beam from the concave mirror was used to readout the holograms. By this method, we suppressed the noise caused by superimposition and realized noise-free readout in holographic storage.

Paper Details

Date Published: 7 February 2005
PDF: 3 pages
Proc. SPIE 5636, Holography, Diffractive Optics, and Applications II, (7 February 2005); doi: 10.1117/12.572614
Show Author Affiliations
Wenqiang Lu, Nankai Univ. (China)
Yudong Li, Nankai Univ. (China)
Key Lab. of Advanced Technique and Fabrication for Weak-Light Nonlinear Photonics Materials (China)
Jingjun Xu, Nankai Univ. (China)
Key Lab. of Advanced Technique and Fabrication for Weak-Light Nonlinear Photonics Materials (China)
Qian Sun, Nankai Univ. (China)
Key Lab. of Advanced Technique and Fabrication for Weak-Light Nonlinear Photonics Materials (China)


Published in SPIE Proceedings Vol. 5636:
Holography, Diffractive Optics, and Applications II
Yunlong Sheng; Dahsiung Hsu; Chongxiu Yu; Byoungho Lee, Editor(s)

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